private XtResult RegisterHandler <TMessage>(Action <TMessage> syncCallback = null, Func <TMessage, Task> asyncCallback = null, CancellationToken token = default)
where TMessage : class, new()
{
Exception exception = null;
// handle notifies when the server is set up
eventHandle = new ManualResetEvent(false);
_ = Task.Run(() =>
{
var next = new SubscriberHandler <TMessage>
(
new SubscriberSocket(),
_configuration,
new NetMQ.NetMQPoller(),
token,
syncCallback: syncCallback,
asyncCallback: asyncCallback
);
var(success, exception) = next.Setup();
// dispose handler when an exception was registered during setup
if (exception is not null)
{
next.Dispose();
return;
}
// add subscriber to dispsables to get rid of them later
lock (_concurrencyToken)
{
_handlers.Add(next);
}
// open resetevent after using setup on the handler and after the poller has started asynchronously
eventHandle.Set();
});
eventHandle.WaitOne();
if (exception is not null)
{
return(XtResult.Failed(exception, "register-subscriber"));
}
return(XtResult.Success("register-subscriber"));
}
